数学不知道种族或地理界限；对于数学来说，文化世界是一个国家。

What seems to us as bitter trials are often blessings in disguise

热核战争不能被视为通过其他手段（根据克劳塞维茨形式）的政治延续。这将是普遍自杀的一种手段。

Great design solves problems you didn't know you had in ways you never expected.

晏子春秋

态度上的弱点会变成性格上的弱点。